- You can use MSN to talk with Vivien on the Internet. I know. But can you tell me

问题补充：

--- You can use MSN to talk with Vivien on the Internet.

--- I know. But can you tell me ?

A. when I can use it

B. what I can use it

C. why can I use it

D. how can I use it

答案：

A. when I can use it

B. what I can use it

C. why can I use it

(答案→)D. how can I use it

解析：句意：--你可以用MSN上网跟Vivien谈- --我知道，但是你能告诉我我怎样使用它吗？有特殊疑问词引导的宾语从句用陈述语序特殊疑问词+主语+谓语动词注意时态保持一致根据题意故选D。